I have a hp Lcd monitor (f2105) and it shows a blank screen. The power light remains on and if i turm it off and back on again, screen comes on for a split second goes blank again. I've plug it into another computer and still the same problem please help

Screen come on for a split second as in1) Shows the desktop for a split second2) Powers up, but goes into sleep mode after a secondScreen come on for a split second as in1) Shows the desktop for a split second2) Powers up, but goes into sleep mode after a second

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

1) Do you have a VGA monitor that you can use for an external monitor?{VGA monitor is also referred to as a CRT monitor. Looks like a small TV}

The back of the laptop, or side, has a VGA port. The VGA monitor is plugged into it.{Laptop off}Then the VGA monitor is turned on, and allowed to 'come to life'.

Now turn on the laptop. Press the Fn key down on the keyboard, and hold it down.Now press the Monitor toggle over key.Since you did not state the HP laptop Model Name, and Model Number, I can only give you generic guidance on this.

The monitor toggle over key has a monitor screen symbol on it. It will be one of the F keys.

(It's an External Monitor toggle key.Press it one time and the display toggles over to an external monitor.Press it again, and both the laptop LCD screen, and the external monitor have a display on them.Press it once more, and the display goes back to the laptop's LCD screen )

If display shows up on the external monitor, you have a problem with the display of the laptop.

Primer:An LCD screen cannot produce enough light by itself. It needs an additional light source.A Backlight is used as an additional light source.

A Backlight is a CCFL.Cold Cathode Fluorescent Lamp {Bulb}Similar to the fluorescent lighting used in homes and businesses, but on a MUCH smaller scale.

{Average Backlight is 3 to 5 inches long, and half the diameter of a No.2 pencil.The Backlight is located on one edge of the LCD screen}

An Inverter is used to provide power for the LCD screen, and the Backlight.

90 percent of the time the problem is the Inverter.

Inverters are relatively cheap, and if I knew the Model Name, and Model Number of your HP laptop, I could give you a link to HP Support where you could download the Service Manual for free.

This way you would have a manual to show, and detail how to replace the Inverter, and I could guide you.

I could also give links for your perusal for Inverters.

There is one more thing however.

HP Pavilion DV2000, DV6000, and DV9000 series laptops, have a graphics chip overheating problem.The laptop comes on, the blue indicator LED lights light up, but the LCD screen is black.

This video explains why, shows a solution to fixing the problem, and details out a lot more than I am privileged to state here,

Before you beginCheck the following items before using the steps in this document:•If you have a flat panel LCD monitor, unplug the monitor power cable, wait about 30 seconds, reconnect the cable and then turn on the monitor. This resets the electronics on the monitor.•Make sure the monitor has power - the light on the monitor is on. If the light on the monitor is off, the monitor does not have power. Connect it to a different power outlet.•If the monitor has a detachable video cable, obtain a second monitor cable for testing purposes in case the cable is bad.•Disconnect all connected devices except the mouse, keyboard and monitor. This includes thumb drives and camera-type memory cards from card reader slots.With the devices disconnected, restart the computer. If the computer starts and the monitor now displays a picture, a device is preventing the computer from starting. Update the BIOS to resolve this issue.Step 1: Connect the computer to another monitorConnect another monitor to the computer to determine which device has the problem (the monitor or the computer). This step is very important to help you determine if the problem is coming from the computer or the monitor. If necessary, temporarily connect the computer to a friends monitor for troubleshooting purposes.After the monitor is connected, turn on the computer and the monitor. What happens?•If the newly attached monitor does not display anything , disconnect the cable and continue at Step 2: Is the video connection damaged? •If the newly attached monitor displays the first startup screen(s) but then goes black, there is a problem with Windows starting. Skip to step 5 .•If the new monitor works , the original monitor or its cables are faulty. Do the following:1.Replace the monitor power cable.1.Turn on the monitor. If the monitor displays an image, you are done. If the monitor remains blank, continue using these steps.1.Replace the video cable.Turn on the monitor. If the monitor displays an image, you are done. If the monitor remains blank, continue using these steps.1.If the monitor does not work after replacing the cables, replace or service the monitor. Step 2: Is the video connection damaged?Inspect the video cable and video connectors for damage. Check for sharp bends or breaks in the cable and bent or broken pins at the connectors. With the monitor and computer off, try to straighten bent pins with a small metal tube, like the tip of an empty mechanical pencil or the tip of a retracted pen.Figure 1: Video connectorIf you had to straighten any pins, reconnect the monitor making sure that the video cable is firmly connected and then turn on the computer and monitor. If the display is still blank, continue to the next step.Step 3: Resetting and updating the BIOSYou can use these steps even though you will not be able to see anything on the monitor.In case an item was changed in the BIOS, such as the primary display device setting, use the following steps to reset the BIOS back to its default configuration:1.Turn on the computer and repeatedly press one of the following keyboard keys. Press the key about once every second for 5 seconds after turning the computer on.◦For HP and Compaq computers that came with Windows 7 and Vista, press F10 .◦For HP and Compaq computers that came with Windows XP, press F1 .◦For Compaq Presario desktop computers built prior to 2002, press F10 .1.Wait another 5 seconds.1.Press the F5 key. This restores the default settings of the BIOS.1.Press the Enter key. This accepts the changes.1.Press the F10 key. This saves the changes.1.Press the Enter key. This saves the changes and exits from the BIOS.1.The monitor should display the first screens received from the computer (the logo screens). If not, find and download the latest BIOS update if one is available for your computer.1.If a BIOS update was not available or the monitor is still blank, continue to the next step.

Unplug power cable from of the PC. Then hold power button in for 30 seconds, this will drain the capacitors, then plug back in the power cable see if this helps, if not could power supply, or video card.

If tried the monitor on two other computers with the same result -- definitly your monitor is faulty. Take it to the repair shop. To make double sure, run your computer with another monitor. If everything is fine now; you can blame the monitor.

Ensure the video cable is connected (and connected to the correct video port).

Turn off the monitor using the monitor's power button and then restart the monitor.

Cycle the power on the monitor as follows:

Turn off the monitor. The power light on the monitor should be off. Leave the computer turned on.

Unplug the power cord.

Wait 5 seconds.

Plug in the power cord.

Press the power button on the monitor to turn on the monitor.
One of two things happens:

The image from the computer displays on the monitor and you can use the computer again. This indicates that the monitor was unable to detect that the computer had awakened from suspend mode. Turn the monitor off when it is not being used or disable suspend mode. For some computers, updating the BIOS corrects these types of suspend problems.

The power light on the monitor comes on but the screen displays one of the messages again. The monitor is not receiving a video signal from the computer that it can detect and use. Continue using these steps to adjust the Windows display resolution to the Monitor's native (default) resolution

Connect the monitor to another computer that you know is working to determine if the monitor should be serviced or replaced:

If the monitor displays an image from another computer, you know that the monitor works. Troubleshoot the video connection and graphics adapter on the computer.

If the monitor remain blank when connected to another computer, the monitor signal processing hardware may be bad. The monitor should be repaired or replaced.